Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
979
FNUS55 KRIW 011202
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
501 AM MST Mon Dec 1 2025
.DISCUSSION...
***This product is currently automated with no discussion
and will not be refreshed with all forecast updates. It should
be used for planning purposes only. If you need additional fire
weather information, please contact the NWS office in Riverton,
Wyoming. The human written discussion section along with the fire
weather forecast will resume regular operations sometime in
Spring 2026.***
---Thunderstorms imply strong gusty and erratic winds---
WYZ280-012300-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny then
becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....29-34.
24 hr trend......13 degrees warmer.
Min humidity........39-45 percent.
24 hr trend......22 percent drier.
20-foot winds.......West winds 10 to 15 mph with higher gusts.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph until 1400, then 20 to 25 mph
until 1600, then around 15 mph.
Mixing Height.......600-2600 ft agl until 1700, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy then
becoming partly cloudy. Slight chance of snow
showers late in the evening. Chance of snow 20
percent.
Chance of thunder...0 percent.
Min temperature.....17-22.
24 hr trend......14 degrees warmer.
Max humidity........75-81 percent.
24 hr trend......13 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 20
mph until 2400, then 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph until 0200, then 20 to
25 mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Slight chance of snow
showers in the morning, then chance of snow
showers late in the morning. Snow showers
likely late in the afternoon. Little or no snow
accumulation. Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....34-39.
24 hr trend......5 degrees warmer.
Min humidity........59-65 percent.
24 hr trend......18 percent wetter.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 25 mph
until 1500, then 15 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 1500, then around 15
mph.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow showers likely in the evening, then snow
showers after midnight. Lows around 18. Winds generally less than
10 mph.
.WEDNESDAY...Colder. Partly cloudy. Chance of snow showers. Lows
around 10. Highs in the upper 20s. West winds around 10 mph.
.THURSDAY...Partly cloudy. Lows around 16. Highs in the lower
30s. Southwest winds around 15 mph.
.FRIDAY...Partly cloudy. Slight chance of snow showers. Lows in
the lower 20s. Highs in the mid 30s. Southwest winds around
15 mph.
.SATURDAY...Partly cloudy. Chance of snow showers. Lows around
17. Highs in the upper 30s.
.SUNDAY...Partly cloudy. Highs in the upper 30s.
$$
WYZ283-012300-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......7 degrees warmer.
Min humidity........41-47 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph and gusty.
Ridge top winds.....Southwest 10 to 15 mph until 1600, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy then
becoming partly cloudy. Slight chance of snow
showers early in the evening. Chance of snow 20
percent.
Chance of thunder...0 percent.
Min temperature.....17-22.
24 hr trend......12 degrees warmer.
Max humidity........74-80 percent.
24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph and gusty.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow showers, then snow
showers likely late in the afternoon. Little or
no snow accumulation. Chance of snow 70
percent.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......6 degrees warmer.
Min humidity........59-65 percent.
24 hr trend......14 percent wetter.
20-foot winds.......West winds around 10 mph until 1500, then
upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 15 mph until 1300, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph until 1600, then north.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow showers likely. Lows around 19. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of snow showers.
Lows around 10. Highs in the upper 20s. Winds generally less than
10 mph.
.THURSDAY...Partly cloudy. Lows around 15. Highs in the lower
30s. Southwest winds around 10 mph.
.FRIDAY...Partly cloudy with slight chance of snow showers. Lows
in the lower 20s. Highs in the mid 30s. Southwest winds around
10 mph.
.SATURDAY...Partly cloudy with slight chance of snow showers and
showers. Lows around 19. Highs in the upper 30s.
.SUNDAY...Partly cloudy. Highs in the upper 30s.
$$
WYZ285-012300-
South Bighorn Mountains-
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny then
becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....26-31.
24 hr trend......6 degrees warmer.
Min humidity........40-46 percent.
24 hr trend......2 percent wetter.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 20 mph
until 1200, then 25 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph until 1400. Around 15 mph
after 1700.
Mixing Height.......200-2000 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy then
becoming partly cloudy. Slight chance of snow
showers late in the evening. Chance of snow 20
percent.
Chance of thunder...0 percent.
Min temperature.....17-22.
24 hr trend......10 degrees warmer.
Max humidity........69-75 percent.
24 hr trend......4 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph and gusty.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......200-600 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow showers in the morning,
then chance of snow showers late in the
morning. Snow showers likely late in the
afternoon. Little or no snow accumulation.
Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....29-34.
24 hr trend......4 degrees warmer.
Min humidity........62-68 percent.
24 hr trend......21 percent wetter.
20-foot winds.......West winds around 10 mph until 1500, then
northwest. Gusts up to 20 mph.
Ridge top winds.....West around 15 mph until 1600, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph until 1700, then north.
Mixing Height.......200-1800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow showers likely in the evening, then snow
showers after midnight. Lows around 17. Winds generally less than
10 mph.
.WEDNESDAY...Colder. Partly cloudy with chance of snow showers.
Lows around 13. Highs in the lower 20s. West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
snow showers. Lows 18 to 23. Highs 27 to 32. West winds 10 to
15 mph.
.SATURDAY...Partly cloudy. Chance of snow showers. Lows around
19. Highs in the lower 30s.
.SUNDAY...Partly cloudy. Highs in the lower 30s.
$$
WYZ281-012300-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......11 degrees warmer.
Min humidity........39-45 percent.
24 hr trend......16 percent drier.
20-foot winds.......Southwest winds around 10 mph until 1200, then
upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph until 1300, then
northwest until 1600, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......400-2400 ft agl until 1300, then 1400-2800 ft
agl until 1600, then 400-800 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow showers late in the
evening. Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....18-23.
24 hr trend......13 degrees warmer.
Max humidity........73-79 percent.
24 hr trend......10 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......400-600 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Chance of snow showers late in
the morning. Snow showers likely late in the
afternoon. Little or no snow accumulation.
Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......3 degrees warmer.
Min humidity........63-69 percent.
24 hr trend......24 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West 10 to 15 mph until 1300, then north.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph until 1400, then north.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow showers likely. Lows around 18. North winds
around 10 mph.
.WEDNESDAY...Colder. Partly cloudy with slight chance of snow
showers. Lows around 13. Highs in the upper 20s. Southwest winds
around 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
snow showers. Lows 18 to 23. Highs 34 to 39. Southwest winds
around 10 mph.
.SATURDAY...Mostly cloudy with chance of snow showers. Lows
around 16. Highs in the mid 30s.
.SUNDAY...Partly cloudy. Highs in the upper 30s.
$$
WYZ282-012300-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....26-31.
24 hr trend......6 degrees warmer.
Min humidity........41-47 percent.
24 hr trend......12 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....Southeast around 10 mph until 1300, then east.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy then
becoming partly cloudy. Slight chance of snow
showers in the late evening and overnight.
Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....15-20.
24 hr trend......10 degrees warmer.
Max humidity........77-83 percent.
24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Southeast around 10 mph until 0100, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......400-600 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow showers. Snow showers
likely late in the afternoon. Little or no snow
accumulation. Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......4 degrees warmer.
Min humidity........59-65 percent.
24 hr trend......18 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....South 5 to 10 mph until 1200, then southeast
until 1300, then northeast until 1600, then
north.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1100, then east until
1600, then northeast.
Mixing Height.......200-1600 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow showers likely. Lows around 19. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of snow showers.
Lows around 11. Highs around 30. Winds generally less than
10 mph.
.THURSDAY...Partly cloudy. Lows around 16. Highs in the lower
30s. Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Slight chance of snow showers. Lows in
the lower 20s. Highs in the mid 30s. Winds generally less than
10 mph.
.SATURDAY...Partly cloudy. Chance of snow showers. Lows around
17. Highs in the upper 30s.
.SUNDAY...Partly cloudy. Highs in the upper 30s.
$$
WYZ275-012300-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....25-30.
24 hr trend......4 degrees warmer.
Min humidity........44-50 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southeast around 10 mph and gusty until 1500,
then upslope/upvalley 5-9 mph.
Ridge top winds.....Southeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast 10 to 15 mph.
Mixing Height.......400-1800 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow showers late in the
evening. Chance of snow showers after midnight,
then slight chance of snow showers after
midnight. Chance of snow 50 percent.
Chance of thunder...0 percent.
Min temperature.....16-21.
24 hr trend......12 degrees warmer.
Max humidity........77-83 percent.
24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southeast winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Slight chance of snow showers in
the morning, then chance of snow showers late
in the morning. Snow showers likely late in the
afternoon. Snow accumulation up to 1 inch.
Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....28-33.
24 hr trend......4 degrees warmer.
Min humidity........61-67 percent.
24 hr trend......18 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph.
Ridge top winds.....South around 10 mph until 1500, then northwest
until 1700, then northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1400, then east until
1600, then north.
Mixing Height.......400-1400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy. Snow showers likely in the
evening, then chance of snow showers after midnight. Lows around
17. Northwest winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows around 13. Highs in the upper
20s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of snow showers.
Lows around 17. Highs in the lower 30s. Winds generally less than
10 mph.
.FRIDAY...Mostly cloudy. Chance of snow showers. Lows around 20.
Highs in the mid 30s. Winds generally less than 10 mph.
.SATURDAY...Mostly cloudy. Chance of snow showers. Lows around
17. Highs in the mid 30s.
.SUNDAY...Partly cloudy. Highs in the mid 30s.
$$
WYZ276-012300-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny then
becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......7 degrees warmer.
Min humidity........43-49 percent.
24 hr trend......9 percent drier.
20-foot winds.......Southwest winds around 10 mph with higher
gusts.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow showers. Chance of snow
20 percent.
Chance of thunder...0 percent.
Min temperature.....21-26.
24 hr trend......12 degrees warmer.
Max humidity........66-72 percent.
24 hr trend......17 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph until 0200, then 20 to
25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph until 0100, then west
around 25 mph.
Mixing Height.......600-1000 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow showers in the morning,
then chance of snow showers late in the
morning. Snow showers likely late in the
afternoon. Little or no snow accumulation.
Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....33-38.
24 hr trend......3 degrees warmer.
Min humidity........57-63 percent.
24 hr trend......13 percent wetter.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph until 1200, then northwest and gusty until
1500, then upslope/upvalley 5-9 mph.
Ridge top winds.....West 15 to 20 mph until 1300, then north 10 to
15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 0800, then around 15
mph until 1500, then north.
Mixing Height.......600-2200 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Cloudy. Snow showers likely in the evening, then
chance of snow showers after midnight. Lows around 18. North
winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows around 16. Highs around 30. West
winds around 10 mph.
.THURSDAY...Partly cloudy with slight chance of snow showers.
Lows in the lower 20s. Highs in the mid 30s. Southwest winds
around 10 mph.
.FRIDAY...Partly cloudy with chance of snow showers. Lows in the
mid 20s. Highs in the upper 30s. Southwest winds around 15 mph.
.SATURDAY...Partly cloudy with chance of snow showers. Lows in
the lower 20s. Highs in the mid 30s.
.SUNDAY...Partly cloudy. Highs in the upper 30s.
$$
WYZ287-012300-
Owl Creek Mountains-
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....26-31.
24 hr trend......7 degrees warmer.
Min humidity........38-44 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph until 1200, then upslope/upvalley
5-9 mph.
Ridge top winds.....Southwest around 10 mph until 1000, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph until 1600, then south.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy then
becoming partly cloudy. Slight chance of snow
showers early in the evening. Chance of snow 20
percent.
Chance of thunder...0 percent.
Min temperature.....18-23.
24 hr trend......9 degrees warmer.
Max humidity........64-70 percent.
24 hr trend......4 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 10 mph until 0200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 0300, then west.
Mixing Height.......200-600 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow showers late in the
morning. Snow showers likely late in the
afternoon. Little or no snow accumulation.
Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....28-33.
24 hr trend......3 degrees warmer.
Min humidity........55-61 percent.
24 hr trend......15 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph.
Ridge top winds.....West 10 to 15 mph until 1000, then southeast
until 1200, then northeast until 1600, then
north.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph until 1200, then northeast.
Mixing Height.......200-1400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow showers likely. Lows around 19. North winds
around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy. Lows 14 to 19. Highs
26 to 31. Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of snow showers. Lows in the
mid 20s. Highs in the mid 30s. Southwest winds around 10 mph.
.SATURDAY...Partly cloudy with chance of snow showers. Lows
around 20. Highs in the mid 30s.
.SUNDAY...Partly cloudy. Highs in the mid 30s.
$$
WYZ286-012300-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....22-27.
24 hr trend......2 degrees warmer.
Min humidity........51-57 percent.
24 hr trend......4 percent wetter.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 15 mph
until 0900, then 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph until 1200, then 20 to 25
mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of snow showers in the evening. Snow
showers likely after midnight. Snow
accumulation up to 2 inches. Chance of snow 70
percent.
Chance of thunder...0 percent.
Min temperature.....14-19.
24 hr trend......11 degrees warmer.
Max humidity........75-81 percent.
24 hr trend......Unchanged.
Humidity recovery...Excellent.
20-foot winds.......West winds 15 to 20 mph. Gusts up to 35 mph
until 2400, then 40 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent until 2400, then 10 percent.
Transport winds.....West 20 to 25 mph until 0200, then 25 to 30
mph.
Mixing Height.......400-1400 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of snow showers, then snow showers
likely late in the afternoon. Snow accumulation
up to 2 inches. Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....25-30.
24 hr trend......2 degrees warmer.
Min humidity........67-73 percent.
24 hr trend......16 percent wetter.
20-foot winds.......West winds 15 to 20 mph with gusts to around 30
mph until 1500, then around 10 mph with higher
gusts.
Ridge top winds.....West 20 to 25 mph until 1500, then around 15
mph.
Chc of wetting rain.10 percent.
Transport winds.....West 20 to 25 mph until 1500, then around 15
mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy. Snow showers likely in the
evening, then chance of snow showers after midnight. Lows around
11. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of snow showers.
Lows around 10. Highs in the lower 20s. West winds around 10 mph.
.THURSDAY...Partly cloudy with chance of snow showers. Lows
around 17. Highs in the mid 20s. West winds around 15 mph.
.FRIDAY...Snow showers likely. Lows in the lower 20s. Highs in
the upper 20s. West winds around 20 mph.
.SATURDAY...Mostly cloudy. Snow showers likely. Lows around 17.
Highs in the upper 20s.
.SUNDAY...Partly cloudy. Slight chance of snow showers in the
morning, then chance of snow showers in the afternoon. Highs in
the upper 20s.
$$
WYZ140-012300-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow showers in the afternoon.
Chance of snow 20 percent.
Chance of thunder...0 percent.
Max temperature.....21-26.
24 hr trend......7 degrees cooler.
Min humidity........60-66 percent.
24 hr trend......17 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest around 10 mph with higher gusts.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph until 1300, then 15 to 20
mph.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Cloudy. Snow showers through the night. Snow
accumulation of 1 to 4 inches. Chance of snow
near 100 percent.
Chance of thunder...0 percent.
Min temperature.....14-19.
24 hr trend......12 degrees warmer.
Max humidity........83-89 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.15 percent until 2400, then 40 percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......600-1400 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Cloudy. Snow showers, then chance of snow
showers late in the afternoon. Snow
accumulation of 1 to 3 inches. Chance of snow
near 100 percent.
Chance of thunder...0 percent.
Max temperature.....24-29.
24 hr trend......3 degrees warmer.
Min humidity........72-78 percent.
24 hr trend......16 percent wetter.
20-foot winds.......Southwest winds around 10 mph until 1500, then
upslope/upvalley 5-9 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.50 percent until 1200, then 40 percent.
Transport winds.....Southwest 15 to 20 mph until 1600, then west
around 10 mph.
Mixing Height.......600-2200 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy. Chance of snow showers in the
evening, then slight chance of snow showers after midnight. Lows
around 7. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows around 7. Highs in the mid 20s.
Winds generally less than 10 mph.
.THURSDAY...Mostly cloudy with chance of snow showers. Lows
around 14. Highs in the lower 20s. Southwest winds around 10 mph.
.FRIDAY...Snow showers likely. Lows around 19. Highs in the mid
20s. Southwest winds around 10 mph.
.SATURDAY...Mostly cloudy with snow showers. Lows around 15.
Highs in the upper 20s.
.SUNDAY...Mostly cloudy. Slight chance of snow showers in the
morning, then chance of snow showers in the afternoon. Highs in
the mid 20s.
$$
WYZ415-012300-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
501 AM MST Mon Dec 1 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
11 PM MST TUESDAY...
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....20-25.
24 hr trend......5 degrees cooler.
Min humidity........63-69 percent.
24 hr trend......22 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with higher gusts.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of snow showers
early in the evening. Chance of snow showers
early in the evening, then snow showers early
in the morning. Snow accumulation up to 2
inches. Chance of snow near 100 percent.
Chance of thunder...0 percent.
Min temperature.....11-16.
24 hr trend......10 degrees warmer.
Max humidity........89-95 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
southwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.5 percent until 2400, then 30 percent.
Transport winds.....West around 15 mph.
Mixing Height.......400-1200 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Snow showers, then snow showers
likely late in the afternoon. Snow accumulation
of 1 to 3 inches. Chance of snow near 100
percent.
Chance of thunder...0 percent.
Max temperature.....22-27.
24 hr trend......2 degrees warmer.
Min humidity........77-83 percent.
24 hr trend......15 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph until 1500, then
upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.35 percent until 1200, then 55 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......600-2400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy. Snow showers likely in the
evening, then chance of snow showers after midnight. Lows around
9. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of snow showers. Lows
around 6. Highs in the mid 20s. Winds generally less than 10 mph.
.THURSDAY...Mostly cloudy with chance of snow showers. Lows
around 14. Highs in the lower 20s. Winds generally less than
10 mph.
.FRIDAY...Snow showers. Lows around 20. Highs in the upper 20s.
Southwest winds around 10 mph.
.SATURDAY...Snow showers. Lows around 16. Highs in the upper 20s.
.SUNDAY...Mostly cloudy with chance of snow showers. Highs in the
upper 20s.
$$
WYZ416-012300-
West Wind River Mountains/East Zone Bridger Teton NF-
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....21-26.
24 hr trend......Unchanged.
Min humidity........49-55 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northwest 10 to 15 mph with higher gusts.
Ridge top winds.....Northwest 10 to 15 mph until 1300, then 15 to
20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph until 1200, then 15 to
20 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of snow showers
early in the evening. Chance of snow showers in
the late evening and overnight. Chance of snow
50 percent.
Chance of thunder...0 percent.
Min temperature.....10-15.
24 hr trend......8 degrees warmer.
Max humidity........84-90 percent.
24 hr trend......10 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
west 10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....West 10 to 15 mph until 0300, then 15 to 20
mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......400-1000 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Chance of snow showers. Chance
of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....21-26.
24 hr trend......1 degree warmer.
Min humidity........69-75 percent.
24 hr trend......22 percent wetter.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy with chance of snow showers. Lows
around 10. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with chance of snow showers. Lows
around 5. Highs in the lower 20s. Winds generally less than
10 mph.
.THURSDAY...Partly cloudy. Chance of snow showers. Lows around
11. Highs in the lower 20s. West winds around 10 mph.
.FRIDAY...Mostly cloudy with chance of snow showers. Lows around
17. Highs in the mid 20s. West winds around 10 mph.
.SATURDAY...Mostly cloudy with snow showers likely. Lows around
13. Highs in the mid 20s.
.SUNDAY...Mostly cloudy. Slight chance of snow showers in the
morning, then chance of snow showers in the afternoon. Highs in
the mid 20s.
$$
WYZ288-012300-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....23-28.
24 hr trend......10 degrees warmer.
Min humidity........47-53 percent.
24 hr trend......12 percent drier.
20-foot winds.......West winds 10 to 15 mph. 25 mph after 0900.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph until 1300, then west 20
to 25 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of snow showers. Chance of snow 50
percent.
Chance of thunder...0 percent.
Min temperature.....14-19.
24 hr trend......10 degrees warmer.
Max humidity........74-80 percent.
24 hr trend......7 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Breezy. West winds 15 to 20 mph with gusts to
around 30 mph until 2400, then around 25 mph
with gusts to around 40 mph.
Ridge top winds.....West 20 to 25 mph until 0100, then 25 to 30
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 2400, then around 30
mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of snow showers, then snow showers
likely late in the afternoon. Snow accumulation
up to 1 inch. Chance of snow 70 percent.
Chance of thunder...0 percent.
Max temperature.....26-31.
24 hr trend......2 degrees warmer.
Min humidity........64-70 percent.
24 hr trend......18 percent wetter.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph until 1500, then around 10 mph with
higher gusts.
Ridge top winds.....West 20 to 25 mph until 1600, then around 15
mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 25 to 30 mph until 1500, then 15 to 20
mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow showers likely. Lows around 13. Winds
generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy with chance of snow
showers. Lows 10 to 15. Highs 22 to 27. West winds 10 to 15 mph.
.FRIDAY...Partly cloudy. Chance of snow showers. Lows in the
lower 20s. Highs in the upper 20s. West winds around 20 mph.
.SATURDAY THROUGH SUNDAY...Partly cloudy with chance of snow
showers. Lows around 17. Highs 27 to 32.
$$
WYZ414-012300-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....20-25.
24 hr trend......2 degrees cooler.
Min humidity........62-68 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Northwest winds 10 to 15 mph. 25 mph after
0900.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of snow showers in the
evening. Snow showers likely after midnight.
Snow accumulation up to 2 inches. Chance of
snow 70 percent.
Chance of thunder...0 percent.
Min temperature.....14-19.
24 hr trend......8 degrees warmer.
Max humidity........86-92 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent until 2400, then 15 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......400-1200 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Snow showers likely in the
morning, then snow showers late in the morning.
Snow showers likely late in the afternoon. Snow
accumulation of 1 to 4 inches. Chance of snow
90 percent.
Chance of thunder...0 percent.
Max temperature.....22-27.
24 hr trend......2 degrees warmer.
Min humidity........75-81 percent.
24 hr trend......18 percent wetter.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.25 percent until 1200, then 50 percent.
Transport winds.....West around 15 mph.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Cloudy. Snow showers likely in the evening, then
chance of snow showers after midnight. Lows around 15. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy with chance of snow showers. Lows
around 8. Highs in the mid 20s. Winds generally less than 10 mph.
.THURSDAY...Mostly cloudy. Chance of snow showers. Lows around
15. Highs in the lower 20s. West winds around 10 mph.
.FRIDAY...Snow showers likely. Lows in the lower 20s. Highs in
the upper 20s. West winds around 10 mph.
.SATURDAY...Snow showers. Lows around 19. Highs in the upper 20s.
.SUNDAY...Mostly cloudy with chance of snow showers. Highs in the
upper 20s.
$$
WYZ278-012300-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....26-31.
24 hr trend......4 degrees warmer.
Min humidity........45-51 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northwest 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....Northwest 10 to 15 mph until 1200, then 15 to
20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph until 1400, then 20 to
25 mph until 1700, then around 15 mph.
Mixing Height.......600-2600 ft agl until 1300, then 1600-3200 ft
agl until 1700, then 600-800 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of snow showers
early in the evening. Chance of snow 20
percent.
Chance of thunder...0 percent.
Min temperature.....13-18.
24 hr trend......10 degrees warmer.
Max humidity........85-91 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph and gusty.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......600-1000 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Slight chance of snow
showers in the morning. Chance of snow showers
late in the morning. Chance of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....27-32.
24 hr trend......1 degree warmer.
Min humidity........64-70 percent.
24 hr trend......18 percent wetter.
20-foot winds.......West winds 10 to 15 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Cloudy. Chance of snow showers in the evening,
then slight chance of snow showers after midnight. Lows around
15. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of snow showers.
Lows around 6. Highs around 30. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy. Lows around 12. Highs in the upper
20s. West winds around 10 mph.
.FRIDAY...Partly cloudy. Chance of snow showers. Lows around 19.
Highs in the lower 30s. West winds around 10 mph.
.SATURDAY...Mostly cloudy. Chance of snow showers. Lows around
16. Highs in the mid 30s.
.SUNDAY...Partly cloudy. Slight chance of snow showers in the
afternoon. Highs in the mid 30s.
$$
WYZ277-012300-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny then
becoming partly cloudy. Areas of fog early in
the morning. Patchy fog early in the morning.
Chance of thunder...0 percent.
Max temperature.....24-29.
24 hr trend......3 degrees warmer.
Min humidity........53-59 percent.
24 hr trend......3 percent drier.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 20 mph
until 1200, then 25 mph.
Ridge top winds.....West 15 to 20 mph until 1300, then 20 to 25 mph
until 1700, then around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph until 1300. Around 15 mph
after 1700.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of snow showers
late in the evening. Chance of snow showers
early in the morning. Chance of snow 50
percent.
Chance of thunder...0 percent.
Min temperature.....16-21.
24 hr trend......9 degrees warmer.
Max humidity........83-89 percent.
24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......400-1000 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Chance of snow showers through
the day. Chance of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....27-32.
24 hr trend......4 degrees warmer.
Min humidity........69-75 percent.
24 hr trend......14 percent wetter.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.5 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Cloudy with chance of snow showers. Lows around
18. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Chance of snow showers. Lows around
9. Highs in the upper 20s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy. Slight chance of snow showers. Lows
around 15. Highs in the upper 20s. West winds around 10 mph.
.FRIDAY...Mostly cloudy with chance of snow showers. Lows in the
lower 20s. Highs in the lower 30s. West winds around 15 mph.
.SATURDAY...Mostly cloudy with chance of snow showers. Lows
around 20. Highs in the mid 30s.
.SUNDAY...Mostly cloudy with slight chance of snow showers. Highs
in the lower 30s.
$$
WYZ279-012300-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....28-33.
24 hr trend......8 degrees warmer.
Min humidity........46-52 percent.
24 hr trend......16 percent drier.
20-foot winds.......West winds 10 to 15 mph with higher gusts until
1200, then 15 to 20 mph with gusts to around 25
mph.
Ridge top winds.....West 15 to 20 mph until 1300, then 20 to 25
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph until 1200, then 20 to 25
mph.
Mixing Height.......600-2600 ft agl until 1300, then 1400-3200 ft
agl until 1700, then 800-1000 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow showers in the late
evening and early morning. Chance of snow
showers early in the morning. Chance of snow 50
percent.
Chance of thunder...0 percent.
Min temperature.....19-24.
24 hr trend......11 degrees warmer.
Max humidity........76-82 percent.
24 hr trend......13 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......600-1000 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Chance of snow showers. Chance
of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....29-34.
24 hr trend......3 degrees warmer.
Min humidity........71-77 percent.
24 hr trend......19 percent wetter.
20-foot winds.......West winds around 15 mph with gusts to around
25 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 1700, then around 15
mph.
Mixing Height.......1000-3000 ft agl until 1700, then 800-1000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Cloudy with chance of snow showers. Lows around
19. Northwest winds around 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of snow showers.
Lows around 9. Highs in the upper 20s. Northwest winds around
10 mph.
.THURSDAY...Partly cloudy. Lows around 17. Highs in the upper
20s. West winds around 15 mph.
.FRIDAY...Mostly cloudy. Slight chance of snow showers. Lows in
the lower 20s. Highs in the lower 30s. West winds around 15 mph.
.SATURDAY...Mostly cloudy. Slight chance of snow showers. Lows in
the lower 20s. Highs in the mid 30s.
.SUNDAY...Partly cloudy. Highs in the mid 30s.
$$
WYZ289-012300-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....25-30.
24 hr trend......10 degrees warmer.
Min humidity........42-48 percent.
24 hr trend......12 percent drier.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 15 mph
until 1200, then 25 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph until 1400, then 20 to 25
mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy then
becoming partly cloudy. Chance of snow showers.
Chance of snow 40 percent.
Chance of thunder...0 percent.
Min temperature.....19-24.
24 hr trend......13 degrees warmer.
Max humidity........75-81 percent.
24 hr trend......9 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 25
mph until 2400, then 35 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 0100, then 25 to 30
mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Chance of snow showers, then
snow showers late in the afternoon. Little or
no snow accumulation. Chance of snow 80
percent.
Chance of thunder...0 percent.
Max temperature.....28-33.
24 hr trend......3 degrees warmer.
Min humidity........64-70 percent.
24 hr trend......16 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 35
mph until 1500, then 25 mph.
Ridge top winds.....Southwest 20 to 25 mph until 1600, then west
around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 25 to 30 mph until 1500, then 15 to 20
mph.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow showers. Lows around 18. North winds around
10 mph.
.WEDNESDAY...Partly cloudy with chance of snow showers. Lows
around 10. Highs in the mid 20s. West winds around 10 mph.
.THURSDAY...Partly cloudy with slight chance of snow showers.
Lows around 15. Highs in the upper 20s. Southwest winds around
15 mph.
.FRIDAY...Partly cloudy. Slight chance of snow showers. Lows in
the lower 20s. Highs in the lower 30s. Southwest winds around
15 mph.
.SATURDAY...Partly cloudy with chance of snow showers. Lows
around 19. Highs in the mid 30s.
.SUNDAY...Partly cloudy. Highs in the lower 30s.
$$
WYZ300-012300-
Casper Mountain-
501 AM MST Mon Dec 1 2025
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....23-28.
24 hr trend......3 degrees warmer.
Min humidity........48-54 percent.
24 hr trend......18 percent wetter.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 20 mph
until 1200, then 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph until 1400, then 20 to 25
mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy then
becoming partly cloudy. Slight chance of snow
showers after midnight. Chance of snow showers
early in the morning. Chance of snow 40
percent.
Chance of thunder...0 percent.
Min temperature.....17-22.
24 hr trend......13 degrees warmer.
Max humidity........76-82 percent.
24 hr trend......13 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 30
mph until 0300, then 40 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 20 to 25 mph until 0200, then around
30 mph.
Mixing Height.......200-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of snow showers, then snow showers late
in the afternoon. Little or no snow
accumulation. Chance of snow 80 percent.
Chance of thunder...0 percent.
Max temperature.....28-33.
24 hr trend......5 degrees warmer.
Min humidity........74-80 percent.
24 hr trend......21 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 35
mph until 1500, then 25 mph.
Ridge top winds.....Southwest 25 to 30 mph until 1500, then 15 to
20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 25 to 30 mph until 1600, then around
20 mph.
Mixing Height.......400-1800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow showers. Lows around 16. Winds generally
less than 10 mph.
.WEDNESDAY...Colder. Partly cloudy. Chance of snow showers. Lows
around 9. Highs in the lower 20s. Winds generally less than
10 mph.
.THURSDAY...Partly cloudy. Slight chance of snow showers. Lows
around 15. Highs in the mid 20s. Southwest winds around 10 mph.
.FRIDAY...Mostly cloudy. Slight chance of snow showers. Lows in
the lower 20s. Highs in the upper 20s. Southwest winds around
15 mph.
.SATURDAY...Mostly cloudy with chance of snow showers. Lows
around 17. Highs in the lower 30s.
.SUNDAY...Partly cloudy. Highs around 30.
$$